METAPHIDIPPUS. 2 
b*. Upper apical angle of basal segment of mandible without 
any distinct cusp or tooth. Apical spine of palpal bulb 
short, stout, and slightly curved outward at the apex. . dentiger, sp. n. 
6'. The apical tooth of the mandibles much nearer to, not further than 
its own length from, the two basal teeth, these being adjacent. 
* Tibia and patella of palpus each three times longer than broad ; 
bulb not unusually dilate at the base, its apical spine long, 
slender, almost straight, directed obliquely forward . . . longipalpus, sp. n. 
** Tibia and patella of palpus each not longer than broad; bulb 
much inflated, its apical spine short, stout, slightly curving 
outward . . . . oe ew ew we el . globosus, sp. n. 
B. Bulb of palpus with a large spirally curved spine situated on the inner 
side of the apical portion. 
(Apical tooth of basal segment of the mandible very far removed 
from the basal teeth; the segment itself strongly curved outward 
atits base.) . 2... . wwe ee . . . maxzillosus, sp. n. 
II. Mandibles shorter, not attenuate; basal segment much shorter than the 
carapace. Fang not nearly so long. 
AA. The lower mandibular tooth sharp at the apex. 
a. Spine of palpal bulb situated at the apex. 
aa. Tibia of the first pair of legs with the 2—2—2 spines situated 
close together at the apex of the segment. 
(Apical spine of palpal bulb short, slender, straight, its apex 
curving slightly inward. ‘Tibial spur of palpus Stronely curved 
atitsapex.). . . . . , . apicalis, sp. n. 
bb. Tibia of the first pair of legs with the 2-29 spines 5 spread o over 
the apical half of the segment. 
a’. Apex of palpal bulb with a double spine, the inner one slightly 
longer than the outer. Tibial spur of palpus very short, 
deflected abruptly downward . . . bispinosus, sp. n. 
b’. Apex of palpal bulb with a broad lanceolate spine, “the a apex 
of which slightly curves outward. Tibial spur of palpus longer 
and more slender, directed forward . . . . . lanceolatus, sp. n. 
6. Spine of palpal bulb spiraliform, situated on the inner side of the 
bulb*. (Upper tooth of mandible the largest, broad conical.) . . devispinus, sp. n. 
BB. The lower mandibular tooth slightly dilate and obliquely truncate at 
the apex. 
A. Spur of tibia of palpus simple, single-pointed, straight or curved 
downward. 
a. Apical spine of bulb bifurcate. 
a’, Apical spine of bulb long, slender, with two equal and similar 
* M. letabilis, Peckh., probably belongs to this group. 
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